Machine for cleaning or polishing sheet-brass or other sheet metal



(No Model.) I 5 Sheets-Sheet 1.

. J. M. CHATFIELD. MACHINE FOR CLEANING 0R POLISHING SHEET BRASS OR OTHER SHEET METAL Pat ANDREW B.GRAHAM.PHOTO-UTHD WASNXNGTOH. D c.

T E 2 E t H W S n H w T e 0 e h R S 0 5 S S A R B T m E EH HS G TNM- AMT H CH m MR .0 G N I N A E L G R 0 U P e E w m M H 0 0 w A M Patented Sept. 10,1895.

AM, PHOTOUTHQWASNINGTOND C 5 Sheets-Sheet 3.

' (No Model.)

J. M. GHAT'PIELD. MACHINE FOR CLEANING 0R POLISHING SHEET BRASS OR OTHER SHEET ANDREI iGRAHRM. PHOYO-UTHQWASHINGTON, DE,

(No Model.) 5 Sheets-Sheet 4;

- J. M. OHATFIELD; MACHINE FOR CLEANING OR POLISHING SHEET BRASS OR OTHER SHEET METAL.

No. 546,114. Patented Sept. 10, 1895.

ANDREW 5.6RAHAM. PHOTO-UTHQWASHINGTONJC.

(No Model.) 5 Sheets-Sheet 5.

J. M. OHATI'IELD. MACHINE FOB. CLEANING 0R POLISHING SHEETBRASS OR OTHER SHEET v METAL. V No. 546,114. Patented Sept. 10, 1895.

a I a W 7 AN DREW 5.5RANAM. FNMA: WnQWASIHNGION. DE.

lINL-tTnsD STATES PATENT @FFtCiEt JAMES M. OHATFIELD, OF THOMASTON, CONNECTICUT;

MACHINE FOR CLEANING OR POLISHING SHEET-BRASS OR OTHER SHEET METAL.

SPECIFICATION forming part of Letters-Patent No. 546,114, dated September 10, 1895.

Application filed October 7, 1893. Serial No. 487,496- (No model.)

I all whom it may concern.-

Be it known that I, JAMES M. CHATFIELD, of Thomaston, in the county of Litchfield and State of Connecticut, have invented a new Improvement in Machines for Cleaning and PolishingSheet-Brass or-other Sheet Metal; and I do hereby declare the following, when taken in connection with accompanying drawing's and the letters and figuresof reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this. specification, and

vation of the machine; Fig. 5, a detail View of a portion of a carrienchain and its attached coupling-piece; Fig. 6, an elevation of,

' a carrier-bar, with an appended view to show its shape in cross-section; Fig. 7, a view showing a portion of a carrier-bar and acouplingpiece to which it isattached; Fig. 8, a detail view of a portion of the starting mechanismc'. a, the latch-bar and keeper and the parts. contiguous thereto; Fig. 9, a vertical section through the main shaft and driving, mechan-.

ism applied thereto.

My invention relates to a machine for clean-;

ing and polishing sheet-brass or other sheet metal, its object beingto provide means for mechanically passing strips of brass through a sawdust or other suitable bath of cleaning substance, instead of by hand, as ordinarily practiced, and also to furnish the machine with means for automatically winding the the strips of brass or other sheet metal, and means for attaching the strips to the endless carrier; fit'thly, of cleaning or polishing devices, an endless carrier, and a carrier-bar adapted to be attached to the carrier, the said bar furnishing means for the attachment of one end of a sheet-metal strip; sixthly, of carrying mechanism, a tripping device automatically actuated thereby, a Winding drum or roll, and mechanism actuated by said trip for automatically operating the winding drum or roll; seventhly, of carrying mechanism, a carrier-bar, a winding drum or roll, and a centrifugal gripper or catch carried by the drum or roll; and, lastly, my invention consists of certain details of construction and combination of parts to be hereinafter fully described and then particularly claimed.

In the process of making sheet-brass the strips are first rolled and then annealed. They are taken out of the annealing-furnace in the form of coils, and then placed in a tank containing water, from which tank they are removed and passed through a cleaning-machine. It is to this machine that my improvements relate.

In the drawings the letter A designates the box at one end of the machine; 13 B", the side bars or beams of the machine, supported on legs a b b, and a a cross-bar at the rear end of the machine. The box A has journaled in its sides-shafts c c, which are provided with rolls 0 O, that are covered with felt or other suitable soft-rubbing surface and constitute the cleaning-rolls. The ends of the shafts c c are journaled in boxes d, fixed on the side bars B B of the frame, and the inner ends are furnished with bandpulleys D D, over which the bands or belts E e from the band-driving pulleys E 8 pass. The shafts c are longer than the shafts a, so

that the pulleys D thereof may beset to one wheel h, mounted also on the loose sleeve E bars.

on drive-shaft F, meshes with a gear-wheelf, which is mounted on a transverse shaft H journaled in boxes h, located on the side bars B B. This transverse shaft H also carries the band-driving pulley e, which drives the band e. Although I prefer to use four cleaning-rolls, operated, as shown, so as to turn in reverse directions-that is to say, rolls 0 rotate oppositely to rolls GI do not limit myself to that number nor to the exact manner of operating the rolls.

The cleaning-box A, which is to contain a suitable quantity ofsawdust, is separated into two distinct parts by means of longitudinallyextending serpentine slots or ways a, passing through each side of the box, only one slot being shown. The upper section of the box is suitably supported by brackets l, secured to the side bar's B B.

A gear-wheel J on sleeve E of the main drive-shaft F meshes with a gear-wheel j on a transverse carrier drive-shaft J, which latter is journaled in boxes 7c, located on the side bars B B, and is provided with sprocketwheels K, one near each end and located between the said side bars.

Extending longitudinally of the machine and passing along the inner sides of the side bars B are two sprocket-chains L, which, at their rear ends, are trained over the sprocketwheels K and at their forward ends are trained over the sprocket-wheels Z, journaled on studs or short shafts L, projecting inwardly from the forward ends of the said side Mounted so as to turn loosely around each of the cleaningroll shafts c o are sprocket-wheels Z, located between the sides of the boxA and the side bars B B. The upper laps of the chains are trained alternately over and under these wheels Z, while their lower laps pass through longitudinal guidetroughs M, only one being shown, supported by hangers m. These chains form an endless carrier; but while I have shown them and also sprocket-wheels over which they pass, I desire it understood that I do not limit myself thereto, but may employ plain pulleys and bands or belts or such other well-known devices as will form an endless carrier. The training of the carrier-chains alternately over and under the sprocket-wheels Z' causes the upper laps thereof to partake of the serpentine path of the slots or ways 2'.

Located outside of the front end of the cleaning-box is a horizontal wiper consisting of an upper and a lower member. The lower member is fixed on a rod n, extending transversely of the frame and secured in brackets n, extending up from the side bars B B, and the upper member is movable, as will be described hereinafter. The lower member comprises two similar end plates O,but one being shown, a bar 0, forming a clamp and fixed to and extending between the plates, an opposing adjustable bar 0, forming a movable clamp, and a rear connecting-plate O, extending between the clamps, the said bar 0 being adjusted by a setscrew P, which passes through the rear plate 0 and engages in a socket 19 formed in the bar 0. Between the clamps 0 0 is held a stripp of flexible material, preferably rubber. The upper member comprises two similar end plates Q, that normally rest on the plates 0 of the lower memher, two bars or clamps q, fixed to and connecting the plates Q, two adjustable bars or clamps q, located between the bars q, and right and left screws R, provided with wrench heads 1" and entering sockets 0", formed on the bars or clamps q. The screws R adjust the clamps q so as to confine two strips R of flexible material, preferably rubber, between them and the fixed clamps q, one of said strips being located on each side of the flexible strip 19 of the lower member of the wiper. The rod S, that carries the upper member, is received at its outer ends in longitudinal recesses or ways 8, formed in the inner sides of the inclined upwardly-extending bearings S, which are elongated and project from the brackets 92. The wiper is inclined, and its end plates 0 Q, are formed with oppositely inclined or oblique edges 8 at their forward ends, which form 'a flaring mouth to receive the carrier-bar between the two members. The path of the upper lap of the carrierchain is between the two members of the wiper, but the chains themselves do not pass between them, as the wiper is located between the two chains.

The carrier-chains are each provided at their inner sides with two coupling-pieces such as Twhich are located oppositely on the chains, and one is located at each end of the chains, so that when one pair of couplingpieces is brought to one end of the machine by the chains the other pair will be brought to the other end. Then the carrier is made up of chains, each coupling-piece T is formed integral with one of the links, as shown in Fig. 5, that link being lettered 25. Each coupling-piece comprises a base U, a back u, and a top U, which is shorter than the base U, the coupling-piece being thereby formed substantially with open jaws U U. The back it is provided with a socket or perforation it. These coupling-pieces are for the purpose of connecting the carrier-bar V (shown in Fig. 7) to the carrier-chains. This bar V is preferably elliptical in cross-section, so as to make the edges 12 v thinner than the intermediate portion. (See Figs. 6 and 7.) Hooks or ures V project from the ends of the bar V, and are for the purpose of entering the sockets u of the coupling-pieces, as shown, whereby the bar is coupled to the carrier-chains and is also prevented from rotary movement. The barVis furnished with a pair of parallel slots to, entering longitudinally thereof and being adapted to receive and retain therein one end of a strip of brass W.

The box A is provided at each end with head and tail boards X X, respectively, which are received by vertical guides 00, formed with or attached to the inner sides of the box. The lower edges of these boards are furnished with strips of felt an or other suitable flexible or soft material. At the front end and intermediate of the sides of the box A are arranged uprights W to, respectively, the upper ends of which are provided with at least two notches or recesses y to receive the rods Y, which carry the swinging arms y, provided at their outer ends with gravitatin g cylindrical brushes Z, which are adapted to be rotated on their axes within the box. By the provision of more than one notch y in each upright V 'w the brushes may be moved slightly forward or rearward, as may be desired, by changing therods Y from one set of notches to an- 2, which is cylindrical and provided with trunnions 3, whereby it is'free to rotate in bearings made therefor in the swinging arms 4.

At each end of the brush 2 are toothed wheels 5, which are adapted to intermesh with toothed wheels 6 at each end of the brush 1. The teeth 5 6 of these wheels are long enough to permit a certain separation of the brushes with out entirely disconnecting the wheels.

. The inner ends of the swinging arms 4: are secured to a rock-shaft 7,,journaled in the side bars B B, and from which projects a le ver 8, that is connected at its lower end with spiral springs 9, secured at their upper ends to loose collars 10, located on a rotatable shaft 11. The tendency of the springs 9 is to force the brush 2 toward the brush 1. A freely swinging or gravitating cylindrical brush 12 is located between the brush 1 and the tail board X, and is provided with trunnions 13, which turn within suitable bearings provided in the swinging L-shaped arms 14, projecting rearwardly from a rock-shaft 15, journaled in the side bars B B. This brush 12 when in use is always in contact with the positivelyrotated brush 1, and when the latter is revolved it is actuated thereby, the object of said brush 12 being to clear the brush 1 from the sawdust or other material used.

The winding drum or roll 16 is mounted on the inner end of the main drive-shaft F, and is preferably of the construction covered in my patent of September 23, 1390,.numbered 436,824. I do not limit myself, however, to the employment of such drum, as any other drum of suitable construction can be employed.

From the inner end of the drum 16 a fixed radial gripper or catch 17 projects, and the This brush 1 is arranged above the upper lap of the endless carrier, and below the said lap and parallel with the said brush is another brush in dotted lines by centrifugal force incident to the revolution of the drive-shaft F. At the outer end of the gripper or catch 18 is a pivoted toe 20, to which is secured aspiral spring 21, in turn secured to the winding drum. When the gripper orcatch is centrifugally thrown out, so as to project the hook 22, formed on its convex edge, the pivoted toe 20 is brought into engagement with a shoulder or ofiset 23, formed on the periphery of a boss 2 1 at the end of the drum, and the gripper or catch is thereby prevented from being accidentally thrown back toward the center of the drum.

The mechanism, to be hereinafter described, which automatically throws the windingdrum into operation, comprises triangularshaped heads 25 26, one at each end of the shaft 11, which is free to turn in bearings in the side bars B B. Each head 25 26 constitutes a carrier or chain-lifter, and the chains pass around the heads in the plane thereof, the upperlap of each chain normally passing over and in contact with one of the flat. faces 27 of each head, while the lower laps of the chains hang below the heads. The angles or pivots 28 of the triangular heads virtually constitute teeth which are adapted to take into the links of the chains. A flange 29 is formed on the inner side of each head 25 26, and thus broadens the fiat faces 27, the flange being in the plane of each face, of which it forms apart. Projecting from the flanged portion of each face is a radial curved dog or lug 30, one being located near each angle or tooth 28. These lugs 30 are thereby located at one side of the chains, so as not to interfere with the passage thereof over the faces of, the heads.

The endless carrier-chains of the machine are set into operationlby means of a startingbelow the triangular heads or chain-lifters 25 26. The inner end of the treadle-lever 32 is attached to a rock-shaft 33, which has bearing in the lower ends of the hangers 34, projecting down from the sidebarB of the frame. An arm 35 extends upwardly from the rockshaft 33 and is connected with the lever 32 by a link or brace 36. Connecting the hangers 34: is a cross-bar 37, notched to receive the forward end of a horizontal reciprocating latch-bar 39, which is provided with a beveled tooth 40, located somewhat to the rear of its free extremity and adapted to engage the notched portion of the cross-bar, the rear end of the latch-bar being pivotally connected with and supported by. a horizontallyswing ing link 4K1, which is pivoted at its front end to the under side of a lug or casting 42 on the side bar or beam 13 of the frame. The latch-bar 39 has a longitudinal elongated slot 43, which receives the upper free end of the rock-arm 35. Normally the said end of the rock-arm 35 is at the forward end of slot 43, but when the tooth 40 of the latch-bar is in engagement with the cross-bar 37, which forms a keeper, it will be located at the rear end.

The rear end of the horizontally-swinging link 41 is pivotally connected with the forward end of the clutch-operating lever 44, which extends rearwardly alongside the loose gear-wheelj, which operates the carrier-driving shaft J and is curved around the said wheel j and pivoted to the side bar or beam 13. This clutch-lever moves in a horizontal plane to and from the gear-wheelj and is provided with a toothed clutch member or sleeve 45, which is mounted to slide on and yet turn with the shaft J, being, of course, provided with the customary feather-and-groove connection with the shaft, and not necessary to be shown, and which is also free to turn within a sleeve or collar 46 of the said lever. The teeth of this clutch member or sleeve 45 are adapted to engage the teeth of the other clutch member or sleeve 47 on the loose gearwheel j, so that when the lever 44 is drawn inwardly the clutch members will engage and the gear-Wheelj thereby be coupled to the carrier-driving shaftJ and the carrier operated. The inward movement of the clutch-lever is accomplished by depressing the treadle whereby the latch-bar 39 is reciprocated, and the link 41, and hence said lever operated. This movement causes the beveled toot-h 40 of the latch-bar to ride over and engage the cross-bar 37 and lock the clutch members together until they are released in the manner to be hereinafter described.

A tension-spring 48 is attached to the treadle-lever 32 and to the leg I) of the frame, whereby after the treadle-lever has been depressed it will be returned to its former position, and the rock-arm 35 hence forced to the rear end of the slot 43 of the latch-bar. Before the endless carrier has been set into operation one of the carrier-barsV (a number of these are preferably provided) is secured to one end of a strip W of brass and is coupled to the carrier, it being secured in the coupling-pieces T located at the front end of the machine. As the carrier now moves the carrier-bar will enter between and separate the members N N of the wiper and permit the flexible or soft strips p and R to frictionally engage the lower and upper surfaces of the strip, respectively, whereby the dirt on the latter is loosened up to a considerable extent. The carrier-bar thence passes under the headboard X and brings the upper surface of the strip W against the felt strip thereon. Thence the carrier-bar causes the strip to travel in the serpentine path between the cleaning-rolls C O O 0, whereby the strip is drawn through the sawdust, which takes up the dirt removed by the rolls and the cylin drical brushes Z. The carrier-bar now takes the strip W out through the box, under and in contact with the felt strip on the tail-board X, and thence through the revolving brushes 1 2, whereby the last vestige of dirt is removed therefrom. The brush 1 is revolved in the direction indicated by the arrow, and in order to guard against its throwing any dirt rearward on the cleaned portion of the strip W the described brush 12 is located forward of and in contact with the same and forms a clearer therefor. The carrier now brings the carrier-bar against the uppermost dogs or lugs 30, which project above it, and tilts the carrierlifting heads 25 26, so as to cause the angles or teeth 28 adjacent thereto to be caught into the carrier, whereby the carrier is lifted and the heads turned, so as to present a new face and lug uppermost. The actuation of the lifting-heads automaticallyoperates the mechanism which sets the Winding-drum into operation; but before describing the instrumentalities which effectuate this I will describe those that automatically stop the motion of the carrier, which is accomplished before the drum ceases its revolution.

At the end of the cross-bar a nearest the side bar B is located alug 49, in which is journaled a short shaft 50, provided with an inwardly-projecting contact-lever 51, and an arm 52, pivotally connected at its outer end, through the medium of a link 53, with the rear end of a long throw-off lever 54, which is pivoted near its forward free end ona pin 55, projecting from the keeper or cross-bar 27. The said free end of the throw-off lever 54 passes the notch 38, and when the tooth 40 of the latch-bar 39 is engaged therein it is in contact with the said free end of the throwoff lever, so that when the coupling-piece '1, which is on the chain that passes over the rotary lifting-head 25, impinges against the contact-lever 51, the throw-oft lever is rocked and the free end thereof caused to raise the latch-bar 39, which will be retracted by means of the spring attached to the hanger 34. This movement causes the separation of the clutch members 45 47, and the movement of the carrier isimmediatelyand automaticallystopped. A spring 54 attached to the lever 54 holds the contact-lever 51 normally in a raised operative position.

It has been stated that the carrier is provided with two pairs of coupling-pieces T, one pair being located at each end. The object of this is to bring a pair of the coupling-pieces into position for the insertion of another coupling-bar, with its attached strip W, at the forward end of the machine as soon as the motion of the carrier is stopped. It will be seen, therefore, that the carrierhas an intermittent automatically-controlled movement, and that when it stops one pair of couplingpieces will be located at each end thereof.

I will now describe the mechanism which automatically elfectuates the rotation of the 7 winding-drum. Acontact-lever56, located on the inner end of a short shaft 57, which passes through. the side bar B, extends toward and in the path of the lifting-head 25. On the outer end of the short shaft 57, is arockarm 58, the outer end of which is pivotally connected by means of. a dependinglink 59 with a keeper-bar 6O pivoted at one end to leg I) and attached at its other end to a spiral spring 61, hanging from the side bar 13, whereby the said rock-arm is held normally in raised position. A latch-bar 62 is extended upwardly and inwardly, so as to he slid upon the pivoted keeper-bar 60 by means of a clutch-operating lever 63, pivoted at (it, and which is connected thereto and is rocked on its pivot (it by means of a tension or pull spring 65, located between it and the standard F, and by the treadle-lever 66, having an arm 67, which is pivoted to the said latch-bar at 68, the said treadle-lever being pivoted to the leg I) at its inner end and provided with a treadle 69 at its outer end The latch-bar 62 has a notch 63, which, when the bar is projected inwardly by the depression of the stop or treadle lever 66, receives the upper edge of the pivoted keeper-bar 60, as shown. The upper end of the clutch-operating lever 63 is furnished with a yoke 70, which embraces the toothed clutch sleeve or member 71, that has a suitable tongue-and-groove connection with the shaft F, and this connection is so well known that it does not require illustration.

The outer end of the sleeve E which in realityis a tubular drive-shaft, is provided with a toothed clutch member 72, adapted to be engaged by the movable clutch member 71. A loose pulley 73 is located on the sleeve or tubular shaft E and a fast pulley 7i is also located thereon, whereby the machine is driven from a suitable belt. The sleeve or tubular shaft E revolves constantly, and when the contact-lever 56 is depressed the pivoted keeper-bar 60 is released from the latch-bar 62 and the latter drawn outwardly by the tension or pull spring 65, whereby the clutch-operating lever 63 is moved so as to cause the clutch member 71 to engage with the clutch member 72, located on the said revolving sleeve. The drive-shaft F is thereby coupled with the sleeve or tubular shaft E and the former, together with the windingdrum, revolved.

In the description of the passage of the carrier-bar through the machine, the point where it and the endless carrier were raised was reached. Immediately the carrier-bar and the carrier are raised by the lifting-heads 25 26, the contact-bar 56 of the mechanism for automatically throwing the drive-shaft F of the winding-druminto action is depressed by the angle or tooth 28 of the head 25 contiguous thereto, and which constitutes a tripping device therefor, and the said mechanism thereby actuated. When the winding-drum starts to rotate the pivoted gripper or catch 18 at the outer end thereof is thrown outwardly by contrifugal force, and it, together with the fixed gripper or catch 17, grasp the carrier-bar and holds it in the longitudinal depression 1.6 of the drum, which, continuing to rotate, winds up the whole strip and takes the place ofthe carrier in drawing it through the machine. As soon as the strip has been wound on the drum the operator depresses the stoppingtreadle 69, which disconnects the shaft F from the sleeve or tubular shaft E and also draws the latch-bar 62 inwardly and looks it to the keeper-bar 60, thus stopping the revolution of the drum. The coiled strip may now be removed fromthe drum and another strip may be attached with its carrier-bar to the front end of the carrier. The pivoting of the gripper or catch 18 allows it to recede, so that the coil may be drawn off the drum with its attached bar. It is desirable that the winding drum or roll stop almost instantly with the depression of the treadle 69. To this end the movable clutch member 71 is provided with a peripheral lug 75, which, when the said member is thrown out of engagement with the fixed clutch member, is by the idle rotation of the shaft F brought against the upper end of vertically-projecting stop-bar 76, secured to standard F.

The mechanism for operating the various parts of the machine may of course have a varied construction, and I do not limit myself to the construction shown, but may employ any other that falls within the scope and spirit of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a machine for cleaning and polishing sheet-brassor other sheetmetal, the combination with cleaning or polishing rolls, of mechan ism including a carrier and a carrier-bar independent of the said carrier, but adapted to be engaged therewith for drawing the metallic strips between the rolls, substantially as and for the purpose set forth.

2. In a machine for cleaning and polishing sheet brass or other sheet-metal, the combination with cleaning or polishing devices, of a carrier provided with coupling pieces, and a carrier-bar independent of said carrier, but adapted to be detachably connected with the coupling pieces of the carrier, and also adapted to be connected to one end of the strips of metal, and whereby said strips are drawn into the machine, substantially as described.

3. In a machine for cleaning and polishing sheet brass or other sheet-metal, the combination with cleaning or polishing devices, of a carrier, a carrier bar and a winding drum, substantially as set forth.

4 In amachine for cleaning and polishing sheet-brass or other sheet-metal, the combination with cleaning or polishing devices,of an intermittently moving carrier, and an automatically operated winding drum, the movement of the latter being controlled by the carrier, substantially as set forth.

IIO

5. In a machine for cleaning and polishing sheet-brass or other sheet-metal, the combination with an endless carrier provided with a pair of coupling-pieces at each end and a coupling-bar adapted to be inserted in the said pieces, of mechanism for automatically and intermittently stopping the motion of the carrier, and whereby a pair of conpling-pieces is always brought to the front end of the inachine, substantially as set forth.

6. In a machine for cleaning and polishing sheet-brass or other sheet-metal, the combination with a wiper, of mechanism for cleaning and polishing the strips, a carrier and a carrier-bar independent of said carrier but detachably connected thereto, said carrier-bar being adapted to be connected to one end of the strip, whereby the said strip is drawn through the wiper, substantially as set forth.

7. In a machine for cleaning and polishing sheet brass or other sheet-metal, the combination of cleaning and polishing-rolls, and a rotary cleaning brush, of an endless carrier, a carrier-bar independent of the carrier but adapted to be detachably connected thereto, said bar also adapted for connection to the end of the strip for drawing the same into the machine, substantially as set forth.

8. In a machine for cleaning and polishing sheet brass orother sheet-metal, the combination with a box having a slot or way extending from end to end, and cleaning and polishing devices therein, of an endless carrier and a carrier-bar independent of said carrier, but adapted to be detachably connected thereto, and also adapted to be attached to the end of the strip and to travel through said slot, substantially as described.

9. In a machine for cleaning and polishing sheet-brass or other sheet-metal, the combination with cleaning and polishing rolls, and a pair of positively-rotated brushes at the rear of the rolls, of a carrier, and a carrier-bar substantially as and for thepurpose set forth.

10. In a machine for cleaning and polishing sheet-brass or other sheet-metal, the combination with a cleaning brush and means for rotating it positively, of a brush-cleaning brush in contact with the aforesaid brush, and a carrier, substantially as and for the purpose set forth.

11. In a machine for cleaning and polishing sheet-brass or other sheet-metal, the combination with a carrier having a detachable carrier-bar, of a winding drum provided with a centrifugal catch or gripper, substantially as and for the purpose set forth.

12. In a machine for cleaning and polishing sheet-brass or other sheet-metal, the combination with a carrier having a detachable carrier-bar and lifting devices or heads for the carrier, of a winding drum provided with a catch or gripper, substantially as and for the purpose set forth.

13. In a machine for cleaning and polishing sheet-brass or other sheet-metal, the combination with a carrier having a detachable carrier-bar and a winding-drum provided with means-for grasping the bar, oflifting devices or heads over which the carrier passes, and mechanism actuated by thelifting devices or heads for automatically throwing the winding drum into action, substantially as and for the purpose set forth. I

14. In amachine for cleaning and polishing sheet-brass or other sheet-metal, the combination with a carrier having a detachable-carrier-bar, and a Winding-drum provided with means for grasping the bar, of lifting devices or heads provided with dogs or lugs, adapted to be engaged by the carrier-bar, and over which the carrier passes, and mechanism actuated by the lifting devices or heads for automatically throwing the winding-drum into action, substantially as and for the purpose set forth.

15. In a machine for cleaning and polishing sheet-brass or other sheet-metal, the combination with a carrier and cleaning and polishing devices, of mechanism forstarting the carrier, and mechanism for automatically stopping the carrier, the latter being provided with means for actuating the lastnamed mechanism, substantially as and for the purpose set forth.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

JAS. M. CIIATFIELD.

Witnesses:

S. S. LAMB, A. E. BLAKEsLEE. 

